Device for extracting spokes from hubs of wheels.



PATENTBD JULY 14, 1908.

l J. MESSINGER. DEVICE FOR EXTR'AGTING SPOKES'BROM HUBS or WHEELS.

APPLICATION FILED JANJBO, 1908,

JOSEPH MESSINGER, OF PHILADELPHIA, PENNSYLVANIA.

DEVICE FOR EXTRACTING- SPOKES FROM HUBS OF WHEELS.

Specification of Letters Patent.

Application filed January 30, 1908. Serial No. 413,333.

Patented July 14., 1908.

To all whom it may concern:

Be it known that I, JosEr MEssINGER, a citizen of the United States, residin in the city and county ofv Philadelphia, tate of Pennsylvania, have invented a new and useful Device for Extracting S okes from Hubs of Wheels, of which the fol owing is a specification.

My invention consists of a device for extracting a fractured or broken spoke or a stump thereof from a wheel hub in a convenient and easy manner without injuring the hub, and leaving it in condition to receive a fresh spoke, the device embodying means for supporting the same on a hub and applying motions, and power of different degrees to the clamps, which engage the spoke and draw the same, and details of construction are provided, as will be hereinafter described.

For the purpose of explaining my invention, the accom anying drawing illustrates a satisfactory re uction of the same to ractice, but the important instrumenta ities thereof may be varied, and so it' is to be understood that the invention is not limited to the specific arrangement and organization shown and described.

Figure 1 represents a side elevation of a spoke extracting device embodying the invention. Fig. 2 reppresents a longitudinal section on line aa, ig. 1. Figs. 3, 4 and 5 represent transverse sections on lines, respectively, acac, yy, .zz. Fig. 6 reresents a perspective view of one of t e clamps emp oyed. Fig. 7 represents a section of a ortion of the gearing employed.

Similar etters of reference indicate corresponding parts in the figures.

Referring tov the drawings :A and B designate heads which are rigidly connected by the rods C,which are screwed thereto and tightened by the nuts D in any suitable manner, said heads being adapted to slide as one with said rods and constituting a follower.

E designates a' plurality of legs, which are A project laterally from the ends of the clamp and are adapted to abut against the relative ortions of the head A as stops.- The inner faces J of the clamps are serrated and the opposite clamps separated a sufficient extent as to receive between them the spoke aforesaid.

The head B has swiveled on it the screw K, which passes through a worm wheel L, whose interior is screw-threaded so as to be engaged by the threads of the screw K, said Wheel being loosely contained in a hollow head or box M, the inner or under end of which is firmly connected with the adjacent ends of the legs E, see Fig. 2, said box also containing the worm N, Whose shaft P has its bearings in said box and extends outside of the same, Where it is squared, so that it may be engaged by a suitable crank handle or other implement to rotate the same, it being noticed that the screw K extends outside of the box M, where it is squared, so that it may be engaged by a suitable crank handle or other implement to rotate the same. The head or box M has its interior formed of a two part chamber, one of which chambers contains the worm wheel L and the other contains the worm N, the wall of said head serving to inclose said worm and worm wheel and so protect the hands of the operator from coming in contact with the same and being injured, while also serving to prevent dirt, chips, etc. from reaching the interior of said head and clogging said worm and worm wheel and the screw K. The worm-wheel L has its bearings on the inner wallsof the box M.

In the screw K is a transversely extending opening Q, which is adapted to receive the pin R, whose ends are adapted to abut against the adjacent portions of the legs E to prevent rotation of said screw when so required, see Fig. 5.

The operation is as follows :The device is located in position by resting the feet of the legs E on the metal ring of the hub of a wheel from which a spoke is to be extracted. The follower is lowered and the clamps accompany the same and slide freely along the spoke until they arrive at the portion where they are to be properly seated and adjusted thereon. Then the screw K is rotated and the follower is thereby raised so that it gradually forces the clamps against the spokes and firmly grip the latter. As the screw continues to move, the spoke follows the clamps and so is conveniently withdrawn from the hub without injuring the latter. It will be noticed that the inner faces J of the clamps extend comparatively parallel with the longitudinal axis of the device, so as to take proper hold throughout their length or for a sufficient length with the spoke that is engaged by the same, while the outer faces of said clamps are inclined so as to be wedgingly engaged by the inner face of the head A of the follower, and thus compress the serrated faces against said spoke, it being noticed that the lugs J on the clamps prevent vertical displacement of the latter from said head in either the raised or lowered positions of said clamps.

When a slower and more powerful movement is required, the pin R is inserted in the opening Q, whereby the screw K is prevented from rotation. The shaft P is then rotated, whereby the worm N and worm wheel L are rotated and the screw K receives sliding motion from the latter, this being communicated to draw the head A through the intermediate members as in the previous case, but more slowly and powerfully, as is evident.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. Heads, rods rigidly connecting them together, said heads and rods being constructed to slide to ether and constitute a follower, legs movab ly guided in said heads, a hollow box to which said legs are secured, wedge shaped clamps longitudinally movable in one of said heads, said box having a two part chamber, a screw swiveled at one end in the other head and extending lengthwise of the device, a worm wheel on said screw within one of the chambers of said box, a shaft supported in the walls of the other chamber of said box at right angles to said screw and a worm on said shaft in the said chamber and engaging said worm wheel.

2. Heads, rods rigidly connecting them together, said heads and rods being constructed to slide together and constitute a follower, legs movably guided in said heads, a two part hollow box to which said legs are secured, wedge shaped clamps longitudinally movable in one of said heads, said boxdiaving a two part chamber, a screw swiveled at one end in the other head and. extending lengthwise of the device, a worm wheel on said screw within one of the chambers of said box, a shaft supported in the walls of the other chamber of said box at right angles to said screw and a worm on said shaft in the said chamber and engaging said worm wheel, the outer ends of said screw and shaft extending beyond the walls of the box.

3. In a device for extracting spokes, two heads, means rigidly connecting them to form a follower, legs guided. in said heads, wedge shaped clamps slidably mounted in one of said heads to be wedged thereby, a hollow box to which one end of said legs are fixedly connected, a screw passed longitudinally through said box and having swiveled connection with the adjacent head, a worm wheel on said screw within said box, a cooperating worm inclosed within said box and removable means insertible through said screw transversely of its length with its ends projecting to engage said legs to prevent rotation of the screw and permit the actuation of the worm and worm wheel to give sliding motion to the screw.

4. In a device for extracting spokes, two heads, means rigidly connecting them to form a follower, legs guided in said heads, wedge sha ed clamps slidably mounted in one of sait heads to be wedged thereby, a hollow box to which one end of said legs are fixedly connected, a screw passed longitudinally through said box and having swiveled connection with the adjacent head, a worm wheel on said. screw within said box, a cooperating worm inclosed within said box and removable means insertible through said screw transversely of its length with its ends projecting to engage said legs to prevent rotation of the screw and permit the actuation of the worm and worm wheel to give sliding motion to the screw, said clamps having their inner faces serrated and their outer inclined faces provided at the ends with lugs adapted to engage adjacent portions of the head in which they are movable.

JOSEPH MESSINGER.

Witnesses JOHN A. VVIEnERsImIM, HARRY C. DALTON. 

